Know Your Environment. Protect Your Health.

Dibromochloromethane

Pilot Mountain, Town of

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

44

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.438 ppb83ND - 1.20 ppb
20190.950 ppb43ND - 1.40 ppb
20200.613 ppb84ND - 1.40 ppb
2021ND80ND
20220.250 ppb82ND - 1.000 ppb
2023ND80ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-2647097-06ND
2018-02-2647097-04ND
2018-05-3151372-061.10 ppb
2018-05-3151372-051.20 ppb
2018-08-3055463-03ND
2018-08-3055463-051.20 ppb
2018-11-2959761-03ND
2018-11-2959761-05ND
2019-05-3067355-041.20 ppb
2019-05-3067355-061.40 ppb
2019-08-2971440-04ND
2019-08-2971440-061.20 ppb
2020-02-1178347-05ND
2020-02-1178347-07ND
2020-05-2682595-011.10 ppb
2020-05-2682595-021.000 ppb
2020-08-1185932-051.40 ppb
2020-08-1185932-071.40 ppb
2020-11-1792506606004_37706ND
2020-11-1792506606006_37706ND
2021-02-24510-21ND
2021-02-24511-21ND
2021-05-04980-21ND
2021-05-04982-21ND
2021-08-102046-21ND
2021-08-102047-21ND
2021-11-023758-21ND
2021-11-023759-21ND
2022-02-08403-22ND
2022-02-08405-22ND
2022-05-171295-22ND
2022-05-171296-22ND
2022-08-093088-221.000 ppb
2022-08-093087-221.000 ppb
2022-11-094166-22ND
2022-11-094167-22ND
2023-02-15542-23ND
2023-02-15544-23ND
2023-05-161497-23ND
2023-05-161498-23ND
2023-08-162718-23ND
2023-08-162719-23ND
2023-11-284400-23ND
2023-11-284401-23ND